From mboxrd@z Thu Jan 1 00:00:00 1970 From: Eric Moore Subject: [PATCH] mptsas : reserving a channel for integrated raid Date: Tue, 11 Jul 2006 10:25:43 -0600 Message-ID: <20060711162543.GA11553@lsil.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from mail0.lsil.com ([147.145.40.20]:51860 "EHLO mail0.lsil.com") by vger.kernel.org with ESMTP id S1750885AbWGKQic (ORCPT ); Tue, 11 Jul 2006 12:38:32 -0400 Content-Disposition: inline Sender: linux-scsi-owner@vger.kernel.org List-Id: linux-scsi@vger.kernel.org To: linux-scsi@vger.kernel.org, James.Bottomley@SteelEye.com Recent changes in the sas transport layer have taken ownership of port_id(channel) assignments. Previously this was owned by the scsi lld, and mptsas code was written to reserve the channel beyond the last port id for integrated raid. With this change in the transport layer, any non-raid devices that land on the reserved channel will not be detected due to improper firmware h:c:t:l mapping calculation. This patch moves the reserved channel to -1. This can be easily changed to some other value in the future release since its a hash define. Its higly doubtfull the transport layer would ever use up all the port ids, and wrap back around to zero since this is int. Signed-off-by: Eric Moore diff -uarpN b/drivers/message/fusion/mptbase.h a/drivers/message/fusion/mptbase.h --- b/drivers/message/fusion/mptbase.h 2006-07-10 11:30:13.000000000 -0600 +++ a/drivers/message/fusion/mptbase.h 2006-07-11 10:18:35.000000000 -0600 @@ -634,7 +634,6 @@ typedef struct _MPT_ADAPTER u16 handle; int sas_index; /* index refrencing */ MPT_SAS_MGMT sas_mgmt; - int num_ports; struct work_struct sas_persist_task; struct work_struct fc_setup_reset_work; diff -uarpN b/drivers/message/fusion/mptsas.c a/drivers/message/fusion/mptsas.c --- b/drivers/message/fusion/mptsas.c 2006-07-10 11:30:13.000000000 -0600 +++ a/drivers/message/fusion/mptsas.c 2006-07-11 10:29:33.000000000 -0600 @@ -67,6 +67,11 @@ #define my_VERSION MPT_LINUX_VERSION_COMMON #define MYNAM "mptsas" +/* + * Reserved channel for integrated raid + */ +#define MPTSAS_RAID_CHANNEL -1 + MODULE_AUTHOR(MODULEAUTHOR); MODULE_DESCRIPTION(my_NAME); MODULE_LICENSE("GPL"); @@ -644,16 +649,13 @@ mptsas_sas_enclosure_pg0(MPT_ADAPTER *io static int mptsas_slave_configure(struct scsi_device *sdev) { - struct Scsi_Host *host = sdev->host; - MPT_SCSI_HOST *hd = (MPT_SCSI_HOST *)host->hostdata; - /* - * RAID volumes placed beyond the last expected port. - * Ignore sending sas mode pages in that case.. - */ - if (sdev->channel < hd->ioc->num_ports) - sas_read_port_mode_page(sdev); + if (sdev->channel == MPTSAS_RAID_CHANNEL) + goto out; + + sas_read_port_mode_page(sdev); + out: return mptscsih_slave_configure(sdev); } @@ -682,10 +684,7 @@ mptsas_target_alloc(struct scsi_target * hd->Targets[target_id] = vtarget; - /* - * RAID volumes placed beyond the last expected port. - */ - if (starget->channel == hd->ioc->num_ports) + if (starget->channel == MPTSAS_RAID_CHANNEL) goto out; rphy = dev_to_rphy(starget->dev.parent); @@ -736,7 +735,7 @@ mptsas_target_destroy(struct scsi_target if (!starget->hostdata) return; - if (starget->channel == hd->ioc->num_ports) + if (starget->channel == MPTSAS_RAID_CHANNEL) goto out; rphy = dev_to_rphy(starget->dev.parent); @@ -776,10 +775,7 @@ mptsas_slave_alloc(struct scsi_device *s starget = scsi_target(sdev); vdev->vtarget = starget->hostdata; - /* - * RAID volumes placed beyond the last expected port. - */ - if (sdev->channel == hd->ioc->num_ports) + if (sdev->channel == MPTSAS_RAID_CHANNEL) goto out; rphy = dev_to_rphy(sdev->sdev_target->dev.parent); @@ -1728,7 +1724,6 @@ mptsas_probe_hba_phys(MPT_ADAPTER *ioc) hba = NULL; } mutex_unlock(&ioc->sas_topology_mutex); - ioc->num_ports = port_info->num_phys; for (i = 0; i < port_info->num_phys; i++) { mptsas_sas_phy_pg0(ioc, &port_info->phy_info[i], @@ -1977,7 +1972,7 @@ mptsas_scan_sas_topology(MPT_ADAPTER *io if (!ioc->raid_data.pIocPg2->NumActiveVolumes) goto out; for (i=0; iraid_data.pIocPg2->NumActiveVolumes; i++) { - scsi_add_device(ioc->sh, ioc->num_ports, + scsi_add_device(ioc->sh, MPTSAS_RAID_CHANNEL, ioc->raid_data.pIocPg2->RaidVolume[i].VolumeID, 0); } out: @@ -2283,35 +2278,26 @@ mptsas_hotplug_work(void *arg) mptsas_set_rphy(phy_info, rphy); break; case MPTSAS_ADD_RAID: - sdev = scsi_device_lookup( - ioc->sh, - ioc->num_ports, - ev->id, - 0); + sdev = scsi_device_lookup(ioc->sh, MPTSAS_RAID_CHANNEL, + ev->id, 0); if (sdev) { scsi_device_put(sdev); break; } printk(MYIOC_s_INFO_FMT "attaching raid volume, channel %d, id %d\n", - ioc->name, ioc->num_ports, ev->id); - scsi_add_device(ioc->sh, - ioc->num_ports, - ev->id, - 0); + ioc->name, MPTSAS_RAID_CHANNEL, ev->id); + scsi_add_device(ioc->sh, MPTSAS_RAID_CHANNEL, ev->id, 0); mpt_findImVolumes(ioc); break; case MPTSAS_DEL_RAID: - sdev = scsi_device_lookup( - ioc->sh, - ioc->num_ports, - ev->id, - 0); + sdev = scsi_device_lookup(ioc->sh, MPTSAS_RAID_CHANNEL, + ev->id, 0); if (!sdev) break; printk(MYIOC_s_INFO_FMT "removing raid volume, channel %d, id %d\n", - ioc->name, ioc->num_ports, ev->id); + ioc->name, MPTSAS_RAID_CHANNEL, ev->id); vdevice = sdev->hostdata; vdevice->vtarget->deleted = 1; mptsas_target_reset(ioc, vdevice->vtarget);